Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [overclocking]

20 questions
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Overclocking: permanent damage?

I've always been under the impression that overclocking of any sort of CPU (for a PC, or a microcontroller), its a bad thing. Your'e essentially operating the unit outside of the manufacturer's specifications, which means that the device may/may…
J. Polfer
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How Modern Overclocking Works

Forgive me if I misunderstand some basic EE principles -- I'm a CS guy. After some googling, nobody really explains how the chip runs faster. I understand voltage must increase per this related article. Do we actually increase the frequency at which…
Rubber Duck
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Is CPU/GPGPU heat dissipation quadratic in clock frequency?

In the following article on overclocking a Pentium from 1GHz to 5GHz using liquid nitrogen: The 5GHz Project, there is an assertion that "Heat dissipation rises exponentially during extreme overclocking". However, in this post on CPU power heat: …
user29254
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Overclocking ADC

Does anyone have experience overclocking an ADC by a small percentage? I have an 80 MHz maximum sampling rate ADC. A new application requires a sampling rate of 82.8 MHz, exceeding the limit by 3.5% Not sure how much risk it is to exceed the margin…
Jason L.
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How much overclocking is "okay"?

So I'm using a PIC32, it's rated for 80 MHz operation. But my crystal might be inaccurate, so it could oscillate at 80.01 MHz. I can presume this is okay, but what if I were to use a 7.3728 MHz crystal and an 11x PLL, would running it at ~81 MHz be…
Thomas O
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Why does increased voltage increase processor performance

When you increase the voltage into a computer's CPU it increases the clock speed of the processor and can lead to better performance. Why does the increased voltage cause the processor's clock speed to change?
Eric Johnson
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Am I overclocking a PIC18F4525?

I'm working on a legacy product, so I can't adjust the crystal or board in any way. It was originally written in PicBasicPro and I'm moving things over to Hi-Tech C. It's a Pic18F4525 and has a 20Mhz crystal. According to the datasheet, the PLL just…
David Rinck
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How do computers deal with RAM latency?

The clocks of CPU's have gotten faster than RAM. So computers have to wait a particular number of clock cycles between sending an address and receiving data. But how does a computer know how many clock cycles to wait? What does the computer do…
Derek Farkas
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How to overclock STM32F303VC and make it work at 72MHz?

I am trying to overclock my STM32F303VC. Unfortunately I can't due to a HARD FAULT EXCEPTION. Could you help me to find the error? I also attached the code. RCC->CR|=1<<16; while(((RCC->CR)&(1<<17))!=(1<<17));//HSEON …
mattia flagiello
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ATMEGA328P Max Clock Speed Without Divider

Does anyone know what the max clock speed of the ATMEGA328P is, without the clock divider? I know that people have been able to overclock the 328 to 30 - 50 Mhz, but I haven't found if those are using the clock divider or not. I'm working on reverse…
rcole
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How overvoltaging makes graphic processing unit operate faster?

My teacher told me that we are trying to make transistors smaller so that they require less electricity to operate, hence make them faster (because changing form 1 signal to 0 or vice versa need less energy, or so he said). Meanwhile, cryptocurrency…
Nhu Thai Sanh Nguyen
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How does VCO in PLL in computer processor work?

In todays personal computers and notebooks, what is usually used as a Voltage-Controlled Oscillator for generating clock signal for processor? Is that a crystal rather than RC circuit? Is it tuned by varicap? Does it contain reference voltage and…
user50222
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What percent increase in electricity consumption would a ~30% overclock yield (assuming it works safely)?

I have a piece of hardware that I want to make run at the same speed as a newer hardware. I know that this increases the energy, and I'm not sure if it is a linear relationship. I want to know how much energy the newer overclock would use. I have a…
Number File
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Overclocking an image sensor for higher FPS

What happens if I overclock an image sensor? For instance the OV7670 (datasheet) which has a rated maximum system clock input (XCLK) of 24 MHz and maximum pixel clock (PCLK) of again 24 MHz. The maximum standard frames per second is 30. Is it…
Kozuch
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Computer in oil inside refrigerator

I have a computer outside its case. All the components are attached and working properly, the problem is that fans dont seem to do a good enough cooling when demanding programs such as high end games are run, so the fans go crazy sometimes and the…
pittler
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